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| WLN-CA.W.16.3 | Determination of nitrite in water by means of the discrete analyser | in accordance with NEN-EN-ISO 15923-1 |
| Principle: | Nitrite reacts in an acid environment with sulphanilamide and N-(1-naphthyl) ethylenediamine dihydrochloride into a red coloured diazo compound. The extinction at 540 nm is a measure for the nitrite content. | |
| Determination: | Nitrite (mg N) | |
| Performance characteristics: | ||
| Matrices qualified by the Dutch RvA: | Drinking water, Surface water | |
| Reporting limit: | 0.005 mg N/l, matrix dependent | |
| Measurement uncertainty: | 20% | |
| Sustainability: | 1 day | |
| Sampling bottle: | Plastic , white , 250 ml (fill up to cap) | |
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| [ 04-02-2025 23:15:50 ] |